Yddal is one of the biggest and finest pine forest areas in the county. The rich forest resources provided an important foundation for the settlement of Yddal. Up until about the 1950s, there were three farms here. Where the lumberjacks couldn't get to, the trees grew very big and can be over 300 years old.
"...it would not be of any particular economical interest to support the planting of forest as the forest that can be cultivated will leave much to be desired in the way of growth potential." These words stem from the economist that at the end of the 1800s was sent to Stend to inspect the planned reforestation in person. The pioneer G.A.Wilson put the economist's words to shame. The spruce that was planted in Rådalen in the period 1867–1869 became a landmark. No other stand of forest in Scandinavia can boast more trees per unit area.